Graptolithoidea | 
Cephalodiscoidea | 
Cephalodiscidae
			
			
			
				Environment: milieu / climate zone / تغييرات عمق / distribution range				
				
					بوم شناسي				
				
			
			
				سطح زی;  تغييرات عمق 104 - 640 m (مرجع 1456).  Polar			
			
			
				
			
			
			
				Antarctica and Australia.
			
			
			
			
			
				Length at first maturity / Size / Weight / سن
			
			
				بلوغ: Lm ?  range ? - ? cm			
			
			
						
			
			
			
			
				
					Oceanic (Ref. 973); tubiculous, on small stones of glacial origin at depth of 104 to 640 m.  Colony-forming; associated with Bryozoa and hexactinellid sponges (Ref. 1456). Tubiculous, on small stones of glacial origin at a depth of 104 to 640 m (Ref. 1456).				
			
			
			
			
			
				Life cycle and mating behavior				
					بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae				
			
			
				
									
			
			
			
			
				مآخذ اصلی  				
					مراجع | هماهنگ كننده | همكاران
				
			
			
				Schiaparelli, S., R. Cattaneo-Vietti and P. Mierzejewski 2004 A "protective shell" around the larval cocoon of Cephalodiscus densus Andersson, 1907 (Graptolithoidea, Hemichordata). Polar Biol. 27:813-817. (مرجع 973)
			
			
			
			
			
			
			
					
						وضعيت در فهرست قرمز IUCN    
						 (مرجع 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				وضعيت از نظر سايتس   (مرجع 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				خطر برای انسان ها  
			
			
				
									
			
			
			
			
			
			
			
			
				استفاده انسانی  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
ابزارها
			
			
			
			
				
					اطلاعات بيشتر				
				
					 Trophic EcologyFood items (preys)
تركيب غذايي
مصرف غذايي
شکارچیان
  Population dynamicsرشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
  Life cycleتولید مثل
بلوغ
Fecundity
تخم ریزی
Eggs
نمو  تخم
Larvae
  PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				منابع اينترنتي
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 0.1 - 9, mean 0.9 (based on 126 cells).			
 
			
			
			
			
			
						
						
						
			
									
						طبقه قيمت  					
					
					Unknown.